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CPS2094 Yoshimitsu Morinishi et al.
                      the  "flyball  revolution",  the  hitting  angle  and  hitting  ball  Since  it
                      depends on the speed and thus the swing speed, it may be possible to
                      analyze the accuracy by constructing a causal model using the data of
                      the hitting angle and the swing speed.
                   By working on the above problem and constructing a causal model it is
               thought  that  we  can  verify  the  causal  effect  in  the  batting  strategy  more
               precisely and make it a valuable thing.

               6. Conclusion / Discussion
                   Through a series of analyze, the effectiveness of flyball revolution in NPB
               was verified. Although this series analysis still leaves room for improvement, it
               seems that we could verify with certain value. Construction of a causal model
               in sports is effective, and it is considered to be very useful for formulating a
               sports  strategy.  It  is  considered  effective  to  build  a  causal  model  by  the
               following procedure.
                   1.  Observation of events for which causal effects are to be examined.
                   2.  Definition of events for which causality effects are to be investigated.
                   3.  Preliminary research and interview surveys of events for which causality
                      effects are to be examined.
                   4.  Prediction of causal effects of events for examining causality effects.
                   5.  Construction of a causal model (definition of independent variables
                      and explanatory variables and covariates).
                   6.  Measurement of causal effects.
                   7.  Verification of obtained causal effects.
                      Also,  in  the  AI  era  widely,  estimating  the  causal  effect  from  the
                      construction of the causal model can be said to be very meaningful.

















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